Once your primary liability insurance is exhausted, your 3M umbrella would kick in. 

Or buy a 5bed/3bath house, live in the primary suite and rent the other spaces out.

I would probably start with something different for your first property.  

The differences lie in how they aggregate, update, and present the data.

I used them all as primary homes then moved and rented them out.

Very big difference and be surprised if you had rats to be honest.

My posts aren't specifically about Rent to Retirement, rather the concept more generally.I am also not concerned with the new construction turn key model, its very different than the lower tier/entry level SFH's and not relevant.

Feedback has not suggested property needs additional repairs/work, only that they are looking in a different area.

Timing will make a big difference leasing this SFH in Seattle— if possible, aim for your vacancy to hit the market ~May 15th to June 15th, maximizing time on market for a June / July lease start date— this will give you the largest tenant pool, lowest vacancy time & highest rent.

How long it takes to be financially ready is different for everyone.